Description
A stack based buffer overflow was found in the virtio-net device of QEMU. This issue occurs when flushing TX in the virtio_net_flush_tx function if guest features VIRTIO_NET_F_HASH_REPORT, VIRTIO_F_VERSION_1 and VIRTIO_NET_F_MRG_RXBUF are enabled. This could allow a malicious user to overwrite local variables allocated on the stack. Specifically, the `out_sg` variable could be used to read a part of process memory and send it to the wire, causing an information leak.
Affected products
Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.
Red Hat Red Hat Enterprise Linux 8
Default version status: affected
8100020240314161907.e155f54d to < *unaffected
Red Hat Red Hat Enterprise Linux 8
Default version status: affected
8100020240314161907.e155f54d to < *unaffected
Red Hat Red Hat Enterprise Linux 9
Default version status: affected
17:9.0.0-10.el9_5.3 to < *unaffected
Red Hat Red Hat Enterprise Linux 6
Default version status: unknown
Red Hat Red Hat Enterprise Linux 7
Default version status: unknown
Red Hat Red Hat Enterprise Linux 7
Default version status: unknown
Red Hat Red Hat Enterprise Linux 8 Advanced Virtualization
Default version status: affected
References
- https://access.redhat.com/errata/RHSA-2024:2962 ↗
- https://access.redhat.com/errata/RHSA-2025:4492 ↗
- https://access.redhat.com/security/cve/CVE-2023-6693 ↗
- https://bugzilla.redhat.com/show_bug.cgi?id=2254580 ↗
- https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/OYGUN5HVOXESW7MSNM44E4AE2VNXQB6Y/ ↗
- https://security.netapp.com/advisory/ntap-20240208-0004/ ↗
- https://lists.debian.org/debian-lts-announce/2025/04/msg00042.html ↗